{"product_id":"svbony-m42-t2-extension-tube-5mm-10mm-30mm","title":"Svbony M42 Adapter 5mm 10mm 30mmT2 Extension Tube","description":"\u003cp\u003eThe \u003cstrong\u003eSvbony M42 (T2) Extension Tube Set – 5mm, 10mm, and 30mm\u003c\/strong\u003e is a precision-machined spacing solution designed to help astrophotographers achieve accurate back focus in camera and imaging train setups. These T2 extension tubes are ideal for fine-tuning sensor distance when using astro cameras, filter wheels, reducers, flatteners, or off-axis guiders.\u003c\/p\u003e\n\u003ch2\u003eAccurate back-focus spacing\u003c\/h2\u003e\n\u003cp\u003eCorrect back focus is critical for achieving sharp stars and optimal field correction. This extension tube set allows you to add \u003cstrong\u003e5mm, 10mm, or 30mm\u003c\/strong\u003e of spacing — individually or combined — giving you flexibility to match manufacturer-specified back-focus requirements without guesswork.\u003c\/p\u003e\n\u003ch2\u003eStandard M42 × 0.75 (T2) threading\u003c\/h2\u003e\n\u003cp\u003eEach tube features industry-standard \u003cstrong\u003eM42 × 0.75 T-thread\u003c\/strong\u003e connections, ensuring broad compatibility with astrophotography cameras, adapters, filter wheels, and optical accessories commonly used in deep-sky imaging.\u003c\/p\u003e\n\u003ch2\u003ePrecision-machined aluminium construction\u003c\/h2\u003e\n\u003cp\u003eManufactured from anodised aluminium, these extension tubes offer solid mechanical alignment while remaining lightweight. The matte black internal finish helps suppress internal reflections, supporting improved contrast and reduced stray light during long exposures.\u003c\/p\u003e\n\u003ch2\u003eModular and versatile design\u003c\/h2\u003e\n\u003cp\u003eThe three included spacers can be used individually or stacked together, allowing multiple spacing combinations to suit a wide range of imaging configurations. This makes the set suitable for both beginner and advanced astrophotography setups.\u003c\/p\u003e\n\u003ch2\u003eTypical applications\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eAdjusting back focus for field flatteners or reducers\u003c\/li\u003e\n\u003cli\u003eSpacing astro cameras and filter wheels\u003c\/li\u003e\n\u003cli\u003eFine-tuning optical train length\u003c\/li\u003e\n\u003cli\u003eGeneral M42 \/ T2 astrophotography setups\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eTechnical specifications\u003c\/h2\u003e\n\u003ctable style=\"width: 100%; border-collapse: collapse;\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eThread type\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eM42 × 0.75 (T2)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eExtension lengths\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e5mm, 10mm, 30mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eMaterial\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eAnodised aluminium\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eColour\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eBlack\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eCompatibility\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eAstro cameras, filter wheels, reducers, flatteners, T2 accessories\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch2\u003ePackage includes\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e1 × 5mm M42 (T2) extension tube\u003c\/li\u003e\n\u003cli\u003e1 × 10mm M42 (T2) extension tube\u003c\/li\u003e\n\u003cli\u003e1 × 30mm M42 (T2) extension tube\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Svbony","offers":[{"title":"Default Title","offer_id":38111504892081,"sku":"SV129","price":23.99,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0523\/1650\/4241\/files\/svbony-m42-adapter-5mm-10mm-30mmt2-extension-tube-297360.jpg?v=1718480394","url":"https:\/\/www.darkclearskies.co.uk\/products\/svbony-m42-t2-extension-tube-5mm-10mm-30mm","provider":"Dark Clear Skies ","version":"1.0","type":"link"}